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LBK System BUS | Instruction manual v1.0 SEP 2020 | LBK-System-BUS_instructions_en v1.0 | © 2020 Inxpect SpA
When the system configuration is saved, the sensor also saves its position. If the sensor subsequently detects
changes in rotation around these axes, it sends a tamper alert to the controller. Upon reception of a tampering
signal, the controller deactivates the safety outputs.
4.9.2 Disable the anti-rotation around axes function
WARNING! If the function is disabled, the system cannot signal a change in the rotation of the
sensor around the longitudinal and transverse axes and therefore any changes in the monitored
area. See "Checks when the anti-rotation around axes function is disabled" below.
In the Inxpect Safety application, in
Configuration
>
Settings
click
Sensors
to disable the anti-rotation
around axes function.
4.9.3 Checks when the anti-rotation around axes function is disabled
When the anti-rotation around axes function is disabled, perform the following checks.
Safety function
Schedule
Action
Access detection
function
Before each machinery restart
Check that the sensor position is that defined by the
configuration.
Check that the monitored area is the same as defined
by the configuration.
See "Validate the safety functions" on page 54.
Restart prevention
function
Each time the safety outputs are
deactivated
4.9.4 When to disable
It may be necessary to disable the anti-rotation around axes function if the sensor is installed on a moving
object (e.g. carriage, vehicle) whose motion would change the sensor inclination (e.g. motion on a slope).
4.10 Anti-tampering functions: anti-masking
4.10.1 Masking signal
The sensor detects the presence of objects that could obstruct the field of view. When the system
configuration is saved, the sensor memorizes the surrounding environment. If the sensor subsequently detects
variations in the environment that could influence the field of view, it sends a masking signal to the controller.
Upon reception of a masking signal, the controller deactivates the safety outputs.
4.10.2 Environment memorization process
The sensor starts the surrounding environment memorization process when the Inxpect Safety application
configuration is saved. From that moment, it waits for the system to exit the alarm status and then scans and
memorizes the environment for about 15 seconds.
It is recommended to start the memorization process after at least 3 minutes from turning on the
system to guarantee that the sensor has reached the operating temperature.
Only at the conclusion of the memorization process it is possible for the sensor to send masking signals.
4.10.3 Causes of masking
Possible causes of masking signals are presented as follows:
l
an object that obstructs the field of view of the sensor has been placed in the detection field.
l
the environment in the detection field changes significantly, for example, if the sensor is installed on
moving parts or if there are moving parts inside of the detection field.
l
the configuration was saved with sensors installed in an environment that is different from the working
environment.
4.10.4 Masking signal when the system is turned on
If the system was off for several hours and there were temperature fluctuations, the sensor might send a false
masking signal when it is turned on. The safety outputs activate automatically within 3 minutes when the
sensor reaches its working temperature.
4. Functioning principles
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